Crepis acuminata

Crepis acuminata is a North American species of flowering plant in the daisy family known by the common name tapertip hawksbeard. It is native to the western United States where it grows in many types of open habitat.[2][3]

Crepis acuminata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Crepis
Species:
C. acuminata
Binomial name
Crepis acuminata
Synonyms[1]
  • Berinia acuminata (Nutt.) Sch.Bip.
  • Crepis angustata Rydb.
  • Crepis seselifolia Rydb.
  • Hieracioides acuminatum (Nutt.) Kuntze
  • Psilochenia acuminata (Nutt.) W.A.Weber

Crepis acuminata is a perennial herb producing a woolly, branching stem up to about 70 centimeters (28 inches) tall from a taproot. The gray-green leaves are long and cut into many triangular, pointed lobes. The longest, near the base of the plant, may reach 40 centimeters (16 inches) in length. The inflorescence is an open array of flower heads at the top of the stem branches. Each of the many flower heads is enveloped in smooth or hairy phyllaries. The flower head opens into a face of up to 10 yellow ray florets. There are no disc florets. The fruit is a narrow achene 7 or 8 millimeters long tipped with a pappus of white hairlike bristles.[4]

References
  1. The Plant List, Crepis acuminata Nutt.
  2. Biota of North America Program 2014 county distribution map
  3. Calflora taxon report, University of California, Crepis acuminata Nutt., Long Leaved Hawk's Beard, Tall hawksbeard, long leaved hawksbeard, tapertip hawksbeard
  4. Flora of North America, Longleaf or tapertip hawksbeard, Crepis acuminata Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 437. 1841.


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